[nrf52832] gc9a01 LCD (240 * 240) output problem

[cabin]

Hello

No reply so I am writing again.
The LCD operates normally using the source as shown below.

https://github.com/Exboom/GC9A01_nRF52

However, the screen does not come out at once, but in stages like stairs.
Is there any way to make the screen appear all at once?

I want the screen to come out smoothly.

please confirm.

[azwin]

  try adding Adafruit GFX library  in main . 

[cabin]

Thank you for your reply.
Is there an example of applying GFX to gc9a01?
When I do it myself, nrf_gfx_print_fast() doesn't work.

BR

Cabin

[Raoul]

Hi Cabin,

As my colleague noted in your previous case, 8MHz really is the maximum SPIM speed for the nRF52832. So if the SPIM speed is the bottleneck, there is nothing you can do. You can't do it through software / "bit-banging" either, you won't be able to toggle the GPIO fast enough.

If you have an nRF52840 available, please try running this code on that, and see if the speed increases.

Alternatively, take a look at the module/component datasheet and see if there are alternative modes of writing, that might let you avoid drawing the whole screen at once. Then you could do small changes to the screen without the "stair" effect.

Best regards,

Raoul

[cabin]

Thank you for your reply.

I will try several things.

BR

Cabin

[xcodebyte]

If you dont mind, can you share me your code base(base code) as the github code is not working for me in neither nrf52832 or nrf52840. I am really in need of it.

Also, I would like to know the pin connections you had done for the same.

email: [email protected]

Thank you.